I think the rate of 65 minutes for gastric half-emptying for formula-fed infants may be outdated. The studies posted are from 1981 and 1999. Formula has changed quite a bit in the past ten years and is now more easily and quickly digested.
Although this study (http://www.journals.elsevierhealth.com/periodicals/yclnu/article/S0261-5614(07)00215-4/abstract) is comparing formulas to other formulas, it shows a GE half-rate of 46-55 minutes, not the 65 minute GE rate shown in the 1999 study.
This should give your argument a case that NEITHER breast- nor formula-fed infants should be put on a strict three-hour schedule. It also is a good counter to parents who formula feed their otherwise breast-fed infants at night to make them "sleep longer."
Tina Carlson, CLC, PPD (studying for IBCLC exam 2011)
Connecticut
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